They stave off the stink, but they contain some shadowy chemicals.
When you dump your old duds in a bin, where do they really end up? Umbra knits together an answer for a curious reader.
You toss your glass bottles in the recycling without a second thought -- but where do they end up? Umbra digs in to a national dilemma.
Is all the hype about self-driving cars taking attention away from more promising technologies? Umbra cruises through the facts.
Umbra advises a landlord whose tenants were tough on their tub -- but the lack of options leaves her fuming.
A reader is eager to get a jump-start on his pasta by opening the hot-water tap -- but Umbra gives him a few heavy reasons to hold off.
When a reader wonders whether he has to switch out all the CFL bulbs in his kitchen at once, Umbra sockets it to him.
Umbra swirls around the topic of bathrooms, drought, and those seemingly unavoidable gratuitous flushes.
Umbra sheds a little light on solar chargers.